MESON Chess Problem Database

Problem Display
PID: 266588 (3NK3/3R4/8/2kp4/8/8/4Q3/4B3 w - - 0 1)

Shmatov, Vladimir Afanasievich

Zadachi i Etyudi, 2011

3NK3/3R4/8/2kp4/8/8/4Q3/4B3

#2

5 + 2

SOLUTION

  • SOUND
  • Sets
    • 1...Kd4
      • 2.Se6#
  • Tries
    • 1.Se6+?
      • 1...Kc6
        • 2.Qa6#
      • 1...Kb6!
    • 1.Bb4+?
      • 1...Kd4
        • 2.Sc6#
        • 2.Se6#
      • 1...Kb6
        • 2.Rb7#
      • 1...Kxb4!
    • 1.Ba5?
      • 1...Kd4
        • 2.Se6#
      • 1...d4!
    • 1.Rb7?
      • 1...Kd4
        • 2.Se6#
      • 1...Kd6
        • 2.Bb4#
        • 2.Qe7#
      • 1...d4!
    • 1.Rc7+?
      • 1...Kd4
        • 2.Se6#
        • 2.Bf2#
        • 2.Bc3#
      • 1...Kd6
        • 2.Bg3#
        • 2.Rc6#
        • 2.Qh2#
        • 2.Qe7#
      • 1...Kb6!
    • 1.Qc2+?
      • 1...Kb5
        • 2.Qc6#
      • 1...Kb6
        • 2.Qc6#
      • 1...Kd4!
    • 1.Qd2?
      • threat
        • 2.Qb4#
      • 1...Kc4
        • 2.Qxd5#
      • 1...Kb6
        • 2.Qa5#
      • 1...Kb5!
    • 1.Qe6?
      • 1...Kc4
        • 2.Qxd5#
      • 1...Kb5
        • 2.Qc6#
      • 1...d4
        • 2.Qc6#
      • 1...Kd4!
  • Keys
    • 1.Rd6!
      • 1...Kd4
        • 2.Se6#
      • 1...Kxd6
        • 2.Qe7#
      • 1...d4
        • 2.Sb7#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • K(a);N_GUARD,P_SPINP(b),S_FLIGHT::S(D)
  • Tries
    • Try
      • S(D);CHECK
      • Vars
        • K(a);P-FLIGHT::QAR2(B)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • B(A);CHECK
      • Vars
        • K(a);N_GUARD,S_FLIGHT::R1(C)
      • Refutation
        • K(a);S_FLIGHT,XB(A)
    • Try
      • B(A);
      • Vars
        • K(a);N_GUARD,P_SPINP(b),S_FLIGHT::S(D)
      • Refutation
        • P(b);
    • Try
      • R(C);
      • Vars
        • K(a);N_GUARD,S_FLIGHT::S(D)
      • Refutation
        • P(b);
    • Try
      • R(C);CHECK
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(B);CHECK
      • Vars
        • K(a);OGATE,P-FLIGHT::QAB1(B)
        • K(a);OGATE,S_FLIGHT::QAR1(B)
      • Refutation
        • K(a);P_SPINP(b),S_FLIGHT
    • Try
      • Q(B);
      • Threat
        • QAB1(B)
      • Vars
        • K(a);N_GUARD,P-FLIGHT::QAB1(B),XP(b)
        • K(a);N_GUARD,S_FLIGHT::QAB1(B)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(B);
      • Vars
        • K(a);N_GUARD,P-FLIGHT,P_SPINP(b)::QAB1(B),XP(b)
        • K(a);N_GUARD,P-FLIGHT::QAB1(B)
        • P(b);::QAR1(B)
      • Refutation
        • K(a);P_SPINP(b),S_FLIGHT
  • Actual
    • R(C);
    • Vars
      • K(a);N_GUARD,P_SPINP(b),S_FLIGHT::S(D)
      • K(a);OGATEB,S_FLIGHT,XR(C)::QAB1(B)
      • P(b);::S(D)
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